PRN Azimuth(d) Elevation(d) Vertical-TEC(tecu) Slant-TEC(tecu) S4(L1/L2) 2019/06/08-15:43:00 G01 112.5 21.5 9.9 +/- 0.76 21.1 +/- 0.76 0.040 / 0.040 G07 100.4 57.9 11.0 +/- 0.52 12.7 +/- 0.52 0.030 / 0.050 G08 43.1 26.8 9.4 +/- 1.26 17.6 +/- 1.26 0.040 / 0.050 G09 176.7 21.0 10.0 +/- 1.90 21.5 +/- 1.90 0.040 / 0.050 G11 97.1 42.6 10.5 +/- 0.85 14.7 +/- 0.85 0.050 / 0.090 G13 313.7 25.3 10.1 +/- 1.32 19.6 +/- 1.32 0.050 / 0.090 G17 203.1 29.9 10.6 +/- 0.94 18.6 +/- 0.94 0.090 / 0.190 G18 85.9 22.8 7.4 +/- 2.07 15.2 +/- 2.07 0.090 / 0.200 G28 295.8 56.6 9.6 +/- 0.75 11.3 +/- 0.75 0.090 / 0.130 G30 14.1 75.7 10.7 +/- 0.38 11.0 +/- 0.38 0.070 / 0.120